# Author: wangjk
# 2025年11月04日09时47分
# xxx@qq.com
print('-' * 50)
print('abc' == 'abd')  # False
print('abc' != 'abd')  # True
print('-' * 50)

print('-' * 50)
dog = 'kele'
print(dog.upper() == 'KELE')  # True
print(dog)
dog = 'Ke Le'
print(dog.lower() != 'ke le')  # False
print(dog)
print('-' * 50)

print('-' * 50)
print(1 == 2)
print(1 != 2)
print(1 > 2)
print(1 < 2)
print(1 >= 2)
print(1 <= 2)
print('-' * 50)

print('-' * 50)
print(1 == 2 and 3 == 3)
print(1 == 1 and 3 == 3)
print(1 == 2 or 3 == 3)
print(1 == 1 or 3 == 4)
print('-' * 50)

print('-' * 50)
print('kele' in ['xiaogou', 'xiaomao', 'xiaozhu'])
print('kele' not in ['xiaogou', 'xiaomao', 'xiaozhu'])
print('-' * 50)
